Jar pump having antidrip spout



A ril 22, 1952 w. A. PRUETT JAR PUMPHAVING ANT IDRIP SPOUT Filed 061;.28, 1946 Patented Apr. 22, 1952 UNITED STATES PATENT "*GFFICE.

JAR PUMP HAVING iN'rmnIe s'rour 7 'vviiiii A. Prue-tt; Los awaited, aseignbr" to Weber Showcase & Fixture 00., Inc., Los

Angeles, Calif., a corporation of Delaware Application October 28, 1946,Serial No. 706,234

1 Claim.

My invention relates to jar pumps and more specifically to a device usedto pump syrup in soda fountains and the like.

Jar pumps heretofore constructed have been made with a top plate towhich is bolted a casing to hold the spout and tubes and these spoutsand tubes are bolted to the casing on the underneath side. This isobjectionable as these pumps are for the purpose of dispensing stickyliquids, such as syrups, and these liquids get into the threads of thebolts where they are hard to clean and if not cleaned, spoil andcontaminate the syrup in the jar.

It is therefore an object of my invention to provide a simple headplace, spout and housing for the tubes and pumps constructed to form aunit mechanism without the use of any bolts or screws.

Another object and advantage of my invention is that the pouring spouthas a means positioned thereon that prevents drip of the heavy stickysyrup after the operating plunger has finished its cycle and delivered ameasurement of syrup.

Other objects and advantages of my invention will be apparent from thefollowing description of the preferred embodiments thereof.

In the drawings:

Figure 1 is a side elevation partially in section of my jar pump.

Figure 2 is a top plan view thereof.

Figure 3 is a cross section taken on the line 33 of Figure 1.

Figure 4 is a cross section taken on the line 4-4 of Figure 3.

Figure 5 is a fragmentary perspective view showing the means forpreventing drip.

A jar pump constructed in accordance with my invention is adapted to bepositioned over the ordinary jar of syrup used in soda fountains and hasa head plate I with projectingsides 2 adapted to fit down over the topof the jar. Substantially in the center of the head plate I is pressed acircular opening 3. During the operation of pressing in the opening 3 aflange 4 is formed extending downwardly from. the outer surface of thehead plate.

A tubular casing 5 is formed to have substantially the same innerdiameter as that of the opening 3 and at one end has an outwardlyextending flange 6 which laps over the flange 4 and is welded thereto tomake a unit construction. The lower end of the casing 5 is peened overto form a projection l which acts as a stop for a washer 8. Just abovethe washer 8 the casing 5 is knurled at 9 to maintain the Washer 8 inposition.

The head plate I, during its original stamping, also has an opening IDpressed therein which forms an outwardly extending flange II into whichis inserted a pipe I2 which extends to substantially the bottom of thejar. This pipe I2 is welded in position inside of the flange II as shownat I3 and at the same time a spout I4 is welded against the ends of theflange II to form a continuation of the pipe I2 with an opening I5through which the syrup emerges.

The pipe I2 acts as a brace for the guide I5. A shaft Il passes throughthe guide It, through the washer 8 and has attached on its outer surfacea plunger I8. Between the lower surface of the plunger I8 and the top ofthe washer 8 is positioned a coil spring I9 to maintain the plunger I8and shaft I! at their upwardly extended position.

A valve plate 20, adapted to reciprocate in a jar and acts as a pistonto force the syrup up through the pipe I2, is attached to the shaft I!by the washers 2I and 22 and the peened end 23. A hole 24 permits thepipe I2 to pass through the valve plate 29 and acts as a guide therefor.The valve plate 20 is free to slide up and down on the pipe I2.

A plurality of ports 25 is formed in the valve plate 20 to act as valvesduring the upward stroke of the valve plate to permit syrup above theplate to readily pass to a position below the plate. However, theseports 25 are closed by valves 26, which are comprised of flat pieces ofmetal having holes 21 through which pass the guide pins 28. The guidepins 28 have heads 29 on their lower side to maintain the valves 26 inposition. When the plunger I8 is depressed the valve plates 26 will bepressed tightly against the underside of the valve plate 20, closing theports 25 and thus, any syrup below the valve plate will be forceddownwardly and must pass through the lower end I2 of the pipe I2 and outthrough the pipe I2 and spout I4.

To prevent dripping the syrup after the dispensing of a quantity ofsyrup from the opening I5, I have found that by pressing an indent 30 onthe top of the spout I4 above the opening I5 the end of the spout willbe so constricted as to form a capillary attraction for any syrupremaining in the opening I5 and this prevents the same from dripping.

While I have described the preferred embodiments of my invention, I amnot limited to any 3 of the details herein set forth except as describedin the'following claim.

UNITED STATES PATENTS I claim? Number Name Date In a jar pump, a pout anut t fr sa 1,414,135 Ingram 25, 1922 spout, an indent impressed in saidspout adja- 5 1,416,309 T nni nfi May 16, 1922 cent to da qy Said Outlet0 constrict ai 1,522,270 Jenney Jan. 6, 1925 m tn form a qa e on 3m anysyrup 1,641,280 Joslin Sept. 6, 1927 as thr qghsai spou '00 m'flw' t S dsm 1,986,248 Bowmer Jan, 1, 1935 from dripping Y M A P 1 2,203,242 WeberJune 4, 1940 i y FOREIGN PATENTS REFERENCES CITED H Number Country DateThe follewirig references ;-e of record in the 366,207 Great BritainFeb. 4, 1932 5421651 France May 19, 1922

